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- 1. PORTABLE AUDIO DEVICESMICHAELFRASERMIGUEL SANTOS FRIDAY DECEMBER 11, 2009 (1)
- 2. Table of ContentsWhat is an Portable Audio Device?The beginning of the portable audio device.The introduction to cassette players.Sony Walkman and Sony Discman.Today's music devices.Apple iPod.Different type of players and What they can do.(2)
- 3. What is anPortable Audio Device?“A portable audio player, sometimes referred to as an MP3 player, is a consumer electronic device that has the primary function of storing, organizing and playing audio files.” (3)MPEG-1 Audio Layer 3, Moving Picture Experts Group Layer-3 more commonly referred to as MP3(4)
- 4. The beginning ofthe portable audio deviceRegency TR-1(5)
- 5. The beginning ofthe portable audio deviceRegency TR-11954, I.D.E.A. released the very first portable transistor radio. The Regency came out in a variety of colors over the years. TR-1 tuned stations by a simple gold dial and played through a low-fidelity monophonic speaker. It retailed for $49.95 back in the day, which would make it cost around $325 in today’s dollars.(6)
- 6. The beginning ofthe portable audio deviceKLH Model 11 Portable(7)
- 7. The beginning ofthe portable audio deviceKLH Model 11 Portable1962, Henry Kloss introduced the KLH Model 11 portable stereo. the first transistorized record player. with the changer/amplifier and two speakers folding into a three-piece suitcase(8)
- 8. THE INTRODUCTION TOCASSETTE PLAYERSCassette players were designed by the Phillips corporation in 1963 and sold to the public in 1965.They were originally meant to record vocal dictation but later evolved to replace record players in home entertainment systems.(9)(10)
- 9. CASSETTE PLAYERSPhilips CompactCassette (11)
- 10. CASSETTE PLAYERSPhilips CompactCassetteIn 1965, Philips released the first ever compact cassette tape.Originally designed for recording dictations and other boring stuff, the cassette recorded up 45 minutes of sound on single 1/8-inch tape.(12)
- 11. THE WALKMANSony WalkmanTPS-L2(15)
- 12. THE WALKMANSony WalkmanTPS-L21979, Sony released the first truly self-contained portable music system, the TPS-L2 Walkman cassette player.The Walkman’s real innovation was its size, measuring only slightly larger than a cassette tape itself. Featured a pair of portable, lightweight headphones and operating on AA batteries, it ushered in a new era of portability. The original Walkman retailed for around $274 US dollars today. (16)
- 13. SONY DISCMANSony DiscmanD-50(17)
- 14. SONY DISCMAN1984, onthe one year anniversary of the introduction of compact discs, Sony introduced their D-50 portable CD player, the first ever portable digital music player.Just slightly larger than a CD case, the player offered all of the great audio quality that digital recordings had to offer.The CD industry experienced sudden growth with the number of CD titles available dramatically increasing.(18)
- 15. TODAY’S MUSIC PLAYERSMP3Player(19)
- 16. TODAY’S MUSIC PLAYERSMP3PlayerDigital sampling is used to convert an audio wave to a sequence of binary numbers that can be stored in a digital format, such as MP3. Common features of all MP3 players are a memory storage device, such as flash memory or a miniature hard disk drive, an embedded processor, and an audio codec microchip to convert the compressed file into an analogue sound signal.(20)
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- 18. APPLE IPODThe iPodline can play several audio file formats including MP3, AAC/M4A, Protected AAC, AIFF, WAV, and Audible audio book. The iPod Photo introduced the ability to display JPEG, BMP, GIF, TIFF, and PNG image file formats. Fifth and sixth generation iPod Classics, as well as third generation iPod Nanos, can additionally play MPEG-4, and QuickTime video formatsAs of September 9, 2009, more than 220,000,000 iPods had been sold worldwide, making it the best-selling digital audio player series in history(22)
- 19. DIFFERENT TYPES OFMUSIC PLAYERSFlash drive playerHard drive player(23)(24)
- 20. DIFFERENT TYPES OFMUSIC PLAYERSFlash playerFlash-based Players: These are non-mechanical solid state devices that hold digital audio files on internal flash memory or removable flash media called memory cards.Due to technological advancements in flash memory, these originally low-storage devices are now available commercially ranging up to 64 GB.Basic MP3 player functions are commonly integrated into USB flash drives.(20)
- 21. DIFFERENT TYPES OFMUSIC PLAYERSHard driveHard drive-based Players or Digital Jukeboxes: Devices that read digital audio files from a hard disk drive (HDD). These players have higher capacities currently ranging up to 250 GB. At typical encoding rates, this means that tens of thousands of songs can be stored on one player.(20)
- 22. WHAT THEY CANDOListen tomusic, watch videos, view images, surf the internet, and play video games.There also being used to replace other products. Replacing camera’s as most new portable audio devices are starting to be equipped with a camera and also a voice recorder.
- 23. SUMMARY AND CONCLUSIONPortableaudio devices have gone from radios, to cassette players, to CDs to now just a little memory card the size of a 2 dollar coin.If your interested just for a few hundred songs then go with a smaller flash player, if you want to carry your whole music library then purchase a hard drive player. Altogether there are so many portable audio devices made today by different companies its hard to decide which one will be carrying your music library.
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- 27. Thank YouAre thereany questions?